Help with fiddleleaf fig

Hello all,

I've had this fiddleleaf fig for about a month and I'm having a hard time knowing what is wrong with it.

Take a look at the pictures:
A lot of the leaves have turned brown on the tips.




This is the top soil:



You can see the moist 3" below surface.



Is this a sign of overwatering? The pictures were taken today a week after watering. So it still has some moist. Should I water it more?

Thank you.

 

Lack of humidity!!

Val